Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
hanh dai » hanh tai, hanh dao, vanh dai
va cham » va chat, va tham
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, may nang
v nang » va nang, vu nang, van nang
goc va » hoc va, doc va, uoc va
loc va » hoc va, luc va
x hoi » xa hoi, o hoi, x ho

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach ((y nang) or (v nang)) x hoi. lieu va cham ((goc va) or (loc va)) hanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ((y nang) OR (v nang)) x hoi. lieu va cham ((goc va) OR (loc va)) hanh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: thuoc sach ((y nang) or (v nang)) x hoi. lieu va cham ((goc va) or (loc va)) hanh dai cua tre*.